Sand pump



June 5, 1928.

R. E. NEILSON SAND PUMP Filed June *27, 1927 4 INVENToR Habe/ Ne/Yson y'ATTORNEY g whieliitrie clesilflz to remQYB 'Patented June 5, 1928.

morey particulaily fte. a, 'delvie ofj that" 'chappoeketfof .anelli`Well, for Sampling. orV clean-' y ing. of the` peche@ and which maybelen1`y pleyedfer l'tifQdutionA o fjlehemiels oiry hot waiter Ito ktheWell pocket to..disnslolvev panafhne formation intheSafI/lds @nfltheifeby Stimulat@ pointaleovey the bettemof the pocket accendfiowgoilfrom the sende tqthewell. j

Theinventen has l y lto previde @pump othS Chaijaeter` which Willpositively. fretvziirl14 ite ,Change O f send y.fluid or;eheinialduringthe lettingfin travel ofK tllepmnp g' whereby` clogging'.of the intakeV is eyoi'dedg' whereby?l poinfcf` of, intake .Q f the sandmaybe. regulated; vandwheieliiy fluid VCon-.tent f .t,heg Weill' poeketmay be, agitated to. .insurel intakev of, ,the send ii-.Om the. Welllii-icoiiiplislf. g'thee and Other. ObjeciS ofeth'e l'nveiitioii Lhaiv.provided iiiipioieii detaile of: str'utnije, the v v which areillustratedl inthe eceornpenying, dieWiiie'.Swhereiii=. Fig. 1 is aVertical section gliv the,lQWer` POi'tiQii 015,211.1: Gil Wellillusiieiinepniicetien ofny iniproyedanrd Yp'uinp' tli'eretej..

Fie. Zie 2in-@heeelleneiiiidiiiai'. Seeiioii. f the. intake .v-.iveepee. 1

- l; dSieiieiS fiii .Qii Well., extending iliroiigh Cap. Mick@ iibeveihe011i sind;1 3 .l @iid termiiietineiiwpeket.4.fermed by ShQQi-.iiig thewell iii: eeordiiiiee, with .COiiiiiioii,X pieice, 5 clsieiiiiiesf's.'mi and. like.. dbris fiiiiiiii-f lated in.y the betteln ,of the.poe'k'etl as 3,/ resnlt 4.0 Off SliCOiiiig 0i.. iii@ well., immrietiirfilfdisf lodginent from thezwellsfthe PQCKQLOFI.

from. scqurlngjof the `Welle witha;I"eeurii`1-1g` tool?. n n n. Y Tieper?? 0f theme11. .above the! Cep. rediris.

i iriiifihe 'Caei reeks anijekteiiding'. iilieiigh Myslandipump.,.1niei1d, dfo.ie@ in. @Well likeftliatfiiliiwe described;.Cemprise emilie?. 9.30.1fisd ,ai its, weer. @iid-by. Mhiidespluidmeferably prowided.witiiiieoihed Shan? 11; frlene.ieeii'iei1-t.byiiliiiig iOOlS iiiA Cese.'

,for iis-,principal .object Slidably "mounted i Within the ybarrel i'above l,the sleeve 18 is a spider 20, cmprsing a cenpreferred ffo'rnieo ff nie-lliVT held,"'theietoY byQ. the nut 274 vand lockv 1a2'g.. seggi`No. 291,829.

a central bore 1.2 thrQugh-Whieh avpistenrod-lwv y lthreads v"14 forrrefceivin'ggj-a `closingplug.0r` gauge leg 15. wherebyiintakete'thejcylindex" f freni tsflwe'r end isl preventedndwherebji 30lowenin'gfofjthepiimpyintofthe welll is regulatedtq locate" ntakepQrts tany desired ing te the length 'ofthe gauge leg.

'end t0 peviderthe lateral port-S 16, andxed tuie y22 and radial Wings'23; haiing their endscrvedto' t 'snuglyin guided lre'latien" with theinner Wall of the barrel. The upperv face '0f the entel'hendiisprpVdedf-Withfa -raee Ygox'fe 24 adapted t9 register" Withl :Lr'alce'groeve-26in1the}l0w`er fac'e'qf a nut 27| threaded to the shank280i e valve stein 29 whichv extends thifou'g'h the port BO'in the S0 vere f' ey length' ',.toT 'extend to near the upper: f

f Where: they fire 1011-, neertednwith a. 'disk '38, 'slidabley withinthe` bainelbutfsnngly 'fitting' the same tot preyent" a rgidiinnectiontherebetween;

the inner face ofl the plug 10, is an expansion spring 10lwhichyieldingly lurges the disk 38,'the rods 37 and the spider 2Odownwardly in the pump cylinder to seatl the 'y spider yon the upper rimof thevalve sleeve 18 and thereby unseat the valve 31 and open theinterior oi the barrel to the lateral ports 16.

Slidably mounted on the rods 37 is a piston 41 having apertures 42through which the rods 37 are passed topermit the piston to' slidev onthe rods and having an central aperture 43 forthe shank 440i the rod 13which extends' slidably through thechannel 12z in the head plug 10 andthrough a ,channel l15 in the'disk 38. The' piston is prefer1-ablyvprovided withian annular packing 16 and a retainer plate,17-held tothe piston bod-y nuts Sand 1-9'onthe rod 13 and its shank tl'at oppositesides vofthe piston.` The upper end fof the rod 13 is providedexteriorly of the barrel with a swivel couplingf() for connecting therod with arope or cable 'lvwhereby the pump may be let into and removed`from the well and whereby,-

tended foruuse for Vhailing sand Jfrom a-fwell pocket, the operation isas follows:

The pump isy suspended from the well cable through the coupling on thepiston rod; the weight of thebarrel and its contained parts causing theypiston to engage the disk 38 lon the' upper ends of the guide rods y andhold the disk 'so that the barrel is lowered thereover, compressing theyspring 40 well and through the well luid into the well and lifting thespider 20 sothat the valve 31v is lifted to its seat, closing intake tothe barrel. j lVith the parts in this relation andy thevalve closed, thepump islet into the pocket. lVhen'the pump rests on the bottom of thewell, weight of the piston rod and the Cable causes the piston to movedown along the guide rods, relieving the spring 40 so thatitpush'es-against the disk ,38 and, aided by the weight of the pistonrod and cable, forces lthe spider 2O downwardly,

thereby -openingthe valve so that Huid in the pocket may pass vthroughtheradial ports inthe barrel and through the port 3() in the valvesleeve 18 into the interior of the barrel. When the pump has been set,the piston may, be reciprocated with short strokes to draw fluid intothe pump andv force the tlnidr from the pump to agitate the fluid andstir up the sand. The sand-laden fluid is then drawn intothebarrel bylift of the piston, the piston engaging the disk 38 as it reaches thetop of ai@ bami to ha u1@ disk, ai@

guide rods, andv the"A spider and thereby lift the valve'Bl to seat itand `trap the sand.

laden iiuid within the barrel.

lThe pump is then' pulled tromthe Well and, upon reaching'they surface,is let down ,to relieve the valve, Which automatically opens undertension of the spring 40 to dis- 7 Ycharge the load.

It is apparent that with a pump constructed in accordance with myinvention there is no'dange'r'of the intake being clogged by seating otthe barrely in the sand bed", that the elevation at which the fluid isadmitted to the pump maybe regulated according'to lthe length o1- thegauge leg lyand thatbecausevof the ysuspension oit they pump from thevalve through the piston rod and guide elements, the valve is positively'closed during lijl't of .the pumpfr'om the well, thereby preventingloss oit' .the fluid d'uringthe upward travel of the pump through thewell.

It thepump is to be used 'tor'delivering chemical or hot water tothewell for removal of parafiine,' thelpumpis charged at 'the surface andlet into the well' pocket until theV weight of the pump is-supportedfrom the bottomof the well, when the valve'will automatically open. todischarge the 'load laterally against the wall of the pocket,` therebyadding mechanical force of the discharging iiuid to the chemicalorheatin-g effectV of 'the cleaning liquid to remove the vparatiine fromthe pores ot the sand. A i y p That I claim and desire tousecure by^Let-.ters Patent is: v

1. A pump ot the character described in-A cluding a barrel having anintake. port lat ioo its lower end5 a valve seat-in the barrel abovetheintake port,'a piston in the'l barrel, an extender having connectedheads at opposite sides ot the piston, a valvesuspended from' the lowerextender head,v a rod Von said piston extended through the upper head tothe exterior of the barrel, and means lfor suspending the pump from thepistonv and its rod.

2.- A' pump of the character described lincludinga barrel having anintake' port :at its` 4 s lower end, a valve'seat in the barrel abovesaid port, an extender longitudinally vmov:-

able in the barrel abovev'the'valvc scat com'- prising heads and spacingguide" rods, a

valve suspended 'from the lower` extender'v head,l a piston slidable onthegu'ide rods and engageable with the upper extender head teh-ft thevalve toits seat, a rod on the piston, and Vmeans foi-'suspending thepump from said rod. j* i,

3. A pump of the character described in-` cluding a barrel having anintake port at its lower end, a valve seat in the barrel above saidportyan extender longitudinally mov y able in the barrel abovetheV valveseat comprising. heads and spacing guide rods, a valve suspended fromthe lower extender head, a

piston slidable on the guide rods and engageable with the upper extenderhead to lift the valve to its seat, means yieldingly urging the extenderto space the valve from its seat, a rod on the piston, and meansforsuspending the pump from" said rod.

4. A. pump of the character described, including a barrel having lateralopenings adjacent its lower end, a valve seat in the barrel above theopenings, an extender comprising upper and lower head members andconnecting rods, a valve for said seat having a stem fixed to the lowerextender head, a piston in the barrel between the extender heads andengageable therewith to seat or unseat said valve, and a rod on saidpiston extended through the upper end of the barrel.

5. A pump of the character described, including a barrel having lateralopenings adjacent its lower end, a valve seat in the barrel above theopenings, an extender comprising upper and lower head members andconnecting rods, a valve for said seat having a stein iixed to the lowerextender head, a piston in the barrel between the extender heads andengageable therewith to seat or unseat said valve, a plug closing theupper end of the barrel, and a rod on said piston slidablv extendedthrough said plug to the exterior of the barrel.

6. A pump of the character described, in-L cluding a barrel havinglateral openings adjacent its lower end, a valve seat in ther barrelabove the openings, an extender comprising upper and lower head membersand connecting rods, a valve for said seat having a stem lixed to thelower extender head, a piston in the barrel between the extender headsand engageable therewith to seat or unseat said valve, a plug closingthe upper end ol' the barrel, a rod on said piston slidablv extendedthrough said plug to the exterior of the barrel, and an expansion springa stem fixed to the lower extender head, a

piston in the barrel between the extender heads and engageable therewithto seat or unseat said valve, a rod on said piston extended through theupper end of the barrel, and a pump supporting leg closing the lower endoi' the barrel.

8. A pump of the character described, including a barrel having lateralopenings adjacent its lower end, a valve seat in the barrel above theopenings, an extender comprising upper and lower head members andconnecting rods, a valve for said seat having a stem fixed to the lowerextender head, a piston in the barrel between the extender heads andengageable therewith to seat or unseat said valve, a plug closing theupper end of the barrel, a rod on said piston slidably extended throughsaid plug to the exterior of 'the barrel, and an expansion spring inthebarrel between said upper head and said plug, the barrel having,clean-out openings adjacent its upper end.

9. A pump of the character described, including a barrel having lateralopenings adjacent its lower end, a sleeve in the barrel above saidopenings forming a valve port and seat, an extender in the barrelcomprising upper and lower heads and connecting rods` a valve having astem swivelly suspended from the lower extender head, and a piston insaid barrel between the extender heads, and having a rod extendingupwardly to the exterior of the barrel.

In testimony whereof I affix mv signature.

ROBERT E. NEILSON.

